Effect of Aging Regimes on the Fracture Mechanism of Low-Alloy Steels with Different Structures

被引：0

作者：

Motovilina G.D. ^{[1
]}

Yakovleva E.A. ^{[1
]}

Khlusova E.I. ^{[1
]}

机构：

[1] National Research Center Kurchatov Institute—CRISM Prometey, St. Petersburg

来源：

Inorganic Materials: Applied Research | 2020年 / 11卷 / 06期

关键词：

ferrite-bainite structure; ferrite-pearlite structure; low-alloy steel; natural and artificial aging; tempering; thermomechanical treatment;

D O I：

10.1134/S2075113320060180

中图分类号：

学科分类号：

摘要：

Abstract—Low-alloy shipbuilding and pipeline steels are currently supplied after thermomechanical treatment, in which a ferrite–pearlite or ferrite–bainite structure depending on alloying is formed. During the thermomechanical treatment and then during cooling, a large number of defects are developed and recorded, which makes the crystalline structure nonequilibrium and leads to a nonuniform distribution of carbon and nitrogen atoms. The properties of steel with a nonequilibrium structure may degrade during processing treatments (cold straightening, bending, welding) and during exploitation or long-term storage. The effects of the modes of strain aging on the mechanism of steel fracture are studied and efficient ways to prevent embrittlement caused by aging are sought. © 2020, Pleiades Publishing, Ltd.

引用

页码：1280 / 1285

页数：5

共 6 条

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